Middlings-purifier



(No Model.) 4 Sheets-Sheet 1.

D. G. REITZ.

MIDDLINGS PURIPIBB..

No. 433,034. Patented Julyw'ZQ, 1390.

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D. G. REITZ. MIDDLINGS PURIEIER.

No. 433,034. Patented July 29, 1890.

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4 Sheets-Sheet 3.

(No Model.)

D. G. RE'I'Z.

MIDDLINGS Mmmm.

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4 Sheets-Sheet 4.

(No Model.)

D. G. RETZ.

MIDDLINGS PURIHBR.

No. 433,034. Patented July 29,1390.

@milf/names UNITED STATES PATENT OEEICE.

DANIEL G. REITZ, OF BERLIN, PENNSYLVANIA.

MIDDLINGS-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 433,034, dated July 29, 1890.

Application led March 6, 1890.

To aZZ whom it may concern,.-

Be it known that I, DANIEL G. REITZ, a citizen of the United States, residing at Berlin, in the county ot' Somerset and State of Pennsylvania, have invented a new and useful Middlings-Purifier, of which the following is a specification.

rlhe invention relates to improvements in 1niddlings-puriers.

The object of the present invention is to simplify and improve the construction of middlings-puriiiers and provide means whereby the red dog or chaffy substances of the grain can be readily separated and conveyed to any desirable point.

The invention consists in the construction and novel combination and. arrangement ot' parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a side elevation of a grain-separator embodying' my invention. Fig. 2 is a longitudinal sectional View on the line .fr o3 of Fig. 4. Fig. 3 isa vertical longitudinal sectional View on the line y y of Fig. 4. Figs. 4 and 5 are transverse sectional views. Fig. 6 is a detail View of a portion of the discharge-pipe. Fig. 7 is a detail sectional view illustrating the position of the discharge-opening relative to the screen.

Referring to the accompanying drawings, 1 designates the frame of the middlings-purifier, which frame consists of the horizontal beams 2, a, and 4, which are arranged at the sides of the frame, the vertical posts 5 and G, that are arranged at the corners and the middle of the frame, and the cross-bars 7 and S, the former of which connects the vertical posts 5 and the side beams at he ends of the frame, and the latter connects the vert-ical posts 5, that are arranged between the beams 2 and 3,at points about midway their length. A shaking screen or riddle 9 reciprocates longitudinally in the upper portion of the frame, and is suspended just above the beams 3 by springs 10,that depend at one side of the screen or riddle 9 from the top beam 4, and at the other side of the riddle from the top 11, as the screen extends transversely across the frame from one beam 3 to within a short distance of the opposite beam and a screw-con- Serial No. 342,831. (No model.)

veyer 12 is arranged in a casing -13 beneath the open space between the side of the fram'e and the edge of the riddle, and is adapted to receive the red dog, bran, or chaffy substances that. are blown from the riddle, as hereinafter described. A cover or top 14 is hinged at one side to a partition 15, depending from the top of the frame, and the said top or cover 14 is arranged a short distance above the riddle and provides a space 16, through which a blast of air is discharged from a pipe 17 to separate the bran or chaffy substances from the stock during its passage along the riddle. The airis conned and compressed in the narrow space between the riddle and the top or cover 14, and is caused to act directly upon the grain without losing' its force, and thoroughly and completely removes the chaffy substances.

The discharge-pipe 17 is arranged at the side of the frame, opposite the openings between the hinged top or cover 14 and the riddle 9, and is provided with a longitudinal discharge-opening 1S, that is arranged at an angle to the riddle, and is adapted to direct the blast of air slightl)7 beyond the edge of the riddle, thereby giving the grain the benefit of the entire force of the blast. The dischargepipe extends nearly the entire length of the riddle, and during the operation of the blast-fan 10 a sheet of air the entire length of the discharge-pipe is continually forced laterally over the riddle, filling the space 16 and completely separating the bran, red dog, or chatfy substances from the grain. The discharge-pipe 17 extends with-in a short distance of the head of the riddle, it being geuerally desirable to have the stock, after being fed to the riddle, well shaken up before being acted upon by the blast of air. The blast-fanv communicates with a supply-pipe 20, that is arrangedy parallel with the discharge-pipe 17, and is connected therewith by pipes 2l, that are provided with regulating- Valves 22, that control the blast of air, and the connecting-pipes 21 are arranged at the ends of the supply-pipe and at an intermediate point. The connecting-pipes and discharge-pipes are preferably smaller-in diameter than the supply-pipe 20, and any number of the former may be employed to enable the blast of air to be controlled. The bran or IOO chaft'y substances, after being separated from the grain, are blown over the edge of the riddle and fall into the conveyer 12, and are carried to a discharge-chute 23.

Theriddle is provided with an imperforate portion 24, upon which the grain falls from the feed-openings 25', and upon which the grain is thoroughly shaken and subjected to the blast before reaching the screens 25, 26, and 27, which screens have openings varying in size. The screen or riddle 9 is reciprocated by pitmen 28, that are operated by eccentrics 29 of a shaft 30, that is mounted in hangers 31 and extends transversely across the front of the frame and has mounted upon one of its ends band-pulleys 32 and 33, the former o'f which is connected by a belt to a suitable power, and the latter is connected by a belt 34 to the pulley 35, that operates the fan.

Beneath the screens of the riddle is arranged a receptacle or bin 36, which is provided with inclined sides that direct the grain or stock to a pair of conveyers, which are arranged beneath the bin or receptacle that has its bottom 39 open and arranged above a pair of screw-conveyers 40 and 41, which are provided with a series of cut-ois that are hinged to a central partition 43, and are adapted to be swung to either side and brought in alignment with the inclined sides 44 and 45 to direct the stock into either conveyer, the cntols beneath the tine sieves being preferably arranged upon one side to direct the stock into one conveyer, and the cut-offs beneath the coarser sieves being arranged to direct the stock into the other conveyer.`

The conveyer-shaft-s 46 and 47 are provided with cog-wheels 4S and 49, which are geared together. The shaft 46 is provided at its extreme end with a bevel-gear 50, which meshes with a similar gear-wheel 5l, mounted upon a counter-shaft 52. The countenshaft 52 receives its motion from the transverse shaft,

and it has mounted upon it a band-pulley 53, that is connected by a belt 54 to a pulley 55. The screw-conveyer 12 receives its motion from the conveyer-shaft 47, and these two shafts are provided with sprocket-wheels, which are connected by a chain 56. The stock left upon the riddle, after passing over the sieves or screens, drops over the end of the riddle and is suit-ably conveyed away.

From the foregoing it will readily be seen that by forming a space above the riddle and forcing a sheet or blast of air laterally across the same the stock is thoroughly and completely cleaned, and the red-dog, bran, or chatt'y substances are quickly removed therefrom.

Having thus described my invention, what I claim is- 1. In a middlings-puriier, the combination of the frame, the reeiprocatingriddle or screen, the cover or top 14, arranged a short distance above the riddle or screen and extending entirely across the same and thereby forming a space 16, and the discharge-pipe arranged opposite the space and longitudinally along the same and having a narrow slot to emita thin sheet of air laterally across the riddle or screen, substantially as described.

2. In a middlings-purier, the combination of the frame, the reciprocating riddle orscreen, the top or cover 14, arranged above the screen and of substantially the same length `and width, thereby forming a space 16, and the longitudinal discharge-pipe arranged opposite the space andprovided with a narrow longitudinal opening arranged at an langle and adapted to direct a thin sheet of air laterally across t-he riddle or screen, substantially as described. Y

3. In a middlings-puritier, the combination ofthe fram e, the reciprocating riddle orscreen, the hinged top or cover 14, arranged above the riddle or screen and forming a space 16, the discharge-pipe arranged opposite the space and provided with a longitudinal opening at an angle to the screen and adapted to direct a sheet of air and cause the same to strike the screen beyond -the edge, the supply-pipe, and the connecting-pipe provided with valves, substantially as described.

4. In a middlings-purifier, the combination of theframe,the reciprocating riddle or screen,

` the top or cover hinged above the riddle or screen and forming a space 16, the dischargepipe having the longitudinal opening arranged at an angle and adapted to direct a sheet ot air upon the riddle or screen, the supply-pipe and connecting-pipe, and the screw-conveyer 12, arranged at the side of the riddle or screen opposite to the dischargepipe, substantially as described.

5. In a middliugs-puriiier, the combination of the reciprocating riddle or screen, the top or cover 14, arranged above the screen, thereby forming the space 16, the blast-pipe arranged longitudinally along one side of the riddle or screen and communicating with the space and having a narrow longitudinal slot adapted to direct asheet of air laterally across the entire surface of the riddle o r screen, and the conveyer arranged longitudinally at the other side of the riddle or screen, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed mysignature in presence of two witnesses.

DANIEL G. REITZ. Vitnesses:

J. H. SIGGERS, R. 1V. DAYTON.

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